The 2-Minute Rule
Feed only what fish consume in 2 minutes. Excess food sinks and decays, feeding ammonia.
Fast fish can outpace slower bottom dwellers — ensure every species gets food.
Frequency by Species
Most tropical community fish: once or twice daily.
Growing juveniles: 3 to 4 small meals daily.
Adult goldfish, koi: once daily.
Large predators (arowana, oscars): every 1 to 2 days for adults.
Variety Matters
Rotate: flake, pellets, frozen (brine shrimp, bloodworms, daphnia), and occasional live food.
Single-food diets lead to nutrition gaps and disease.
Overfeeding Warning Signs
Ammonia rising between water changes.
Cloudy water persistent beyond cycling period.
Fish bloated or uninterested in food.
Fasting Days
Skip one feeding per week for adult community fish.
Helps digestion and reduces bioload.